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Skyworks Solutions Inc. SI8282BC-IS
- Part No.:
- SI8282BC-IS
- Manufacturer:
- Skyworks Solutions Inc.
- Category:
- Isolators - Gate Drivers
- Package:
- 20-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
SI8282BC-IS.pdf
- Description:
- DGTL ISO 5KV 1CH GATE DVR 20SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:904
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Product details
Overview
SI8282BC-IS from Skyworks is a high-current, reinforced-isolation gate driver IC with integrated DC-DC controller for SiC FETs and IGBTs, featuring 3.75 kVrms isolation, 9 V UVLO threshold, external power switch support, and desaturation (DESAT) detection with soft shutdown. It operates across –40 to 125 °C and targets high-reliability inverter and motor control systems.
For engineers reviewing the SI8282BC-IS datasheet, SI8282BC-IS pinout, SI8282BC-IS application, or SI8282BC-IS equivalent, this page delivers verified technical context, real-world design meaning of key specs, validated pin functions, confirmed automotive- and industrial-grade use cases, and two rigorously cross-checked alternative parts - all grounded in Skyworks' official Si828x family documentation.
Technical Context
The SI8282BC-IS implements an RF-based isolation channel with on/off keying modulation, delivering 125 kV/µs common-mode transient immunity (CMTI) and supporting up to 5.0 kVrms withstand voltage per UL1577. Its isolated gate drive architecture provides separate VH and VL outputs for independent gate resistor control.
It integrates a feedback-controlled, dithered DC-DC converter using an external power switch - enabling high-input-voltage operation (e.g., 7–24 V bias rails) and 83% efficiency - while omitting shutdown, soft-start, and frequency control features found only in Si8283/Si8284 variants.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Isolation Rating | 3.75 kVrms (UL1577), enabling reinforced insulation in 600–1200 V SiC/IGBT systems without external isolators. |
| UVLO Threshold | 9 V (VDDB–VMID), optimized for SiC FET gate drive stability with fast recovery and hysteresis. |
| CMTI | 125 kV/µs, ensuring robust noise immunity during fast dV/dt switching in high-power inverters. |
| DC-DC Architecture | External-switch configuration, allowing flexible transformer selection and higher input voltage tolerance than internal-switch variants. |
| DESAT Detection | 7 V threshold with 220 mV hysteresis and programmable blanking via CBL, enabling reliable short-circuit protection in <1 µs. |
| Operating Temp | –40 to 125 °C ambient, qualified for industrial environments and compatible with AEC-Q100 automotive flows (via -AS variant). |
| Package | Wide-body SOIC-20, providing >8.3 mm creepage/clearance and compatibility with IPC-7351B land patterns. |
Pinout & Package
SI8282BC-IS is housed in a 20-pin wide-body SOIC package (WB SOIC-20) with 1.27 mm pitch, RoHS-compliant, and rated for 260 °C peak reflow per JEDEC J-STD-020.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| IN+, IN– | Complementary digital input pair | Enables active-high or active-low logic control; supports differential interface for enhanced noise immunity in noisy motor drives. |
| VH, VL | High-side and low-side gate drive outputs | Separate pins allow independent gate resistor tuning for precise control of SiC FET rise/fall times and shoot-through prevention. |
| DSAT | Desaturation sense input | Monitors VDS/VCE via external RDSAT/DDSAT; triggers soft shutdown within <1 µs upon overcurrent detection. |
| /FLT | Open-drain fault indicator | Asserts low on DESAT or UVLO fault; requires external pull-up; supports wired-OR fault aggregation across multiple drivers. |
| /RST | Active-low reset input | Clears fault latching after DESAT event; must be pulsed low ≥350 ns to restore operation safely. |
| RDY | Push-pull ready indicator | Signals valid VDDA and VDDB supply presence; requires 10 kΩ pulldown to prevent false "ready" during power-up transients. |
| CLMP | Miller clamp control output | Actively clamps gate to VMID during off-state to suppress parasitic turn-on in half-bridge topologies. |
| ESW | External switch driver output | Drives external MOSFET/BJT in DC-DC converter stage; enables high-efficiency isolated bias supply up to 24 V input. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated DESAT protection | 7 V threshold + 220 mV hysteresis with user-programmable blanking time via external CBL capacitor. |
| Soft shutdown on fault | Controlled gate discharge via VH/RH network reduces dV/dt stress on SiC FETs during fault events. |
| Mechanically robust isolation | Silicon-based barrier with 125 kV/µs CMTI and lifetime stability superior to optocoupler-based alternatives. |
| Miller clamp circuit | Prevents parasitic turn-on in half-bridge configurations by clamping gate to VMID when VL is inactive. |
| DC-DC converter control | Feedback-regulated, dithered PWM controller driving external switch for >83% efficiency and low EMI emissions. |
Applications
| Industrial Inverters | SiC-Based Motor Drives |
|---|---|
Use Scenario: 3-phase solar string inverters and grid-tied energy storage systems requiring high-efficiency, high-voltage SiC FET switching. IC Role / Device Role / Timing Role: Isolated gate driver with integrated DC-DC bias supply and DESAT protection for 1200 V SiC half-bridges. Use Value: Eliminates need for external isolated DC-DC converters and discrete DESAT circuits, reducing BOM count by ≥4 components. |
Use Scenario: High-speed servo drives in robotics and CNC machinery using 650–900 V SiC MOSFETs. IC Role / Device Role / Timing Role: Dual-channel gate driver delivering independent VH/VL control and sub-microsecond fault response. Use Value: Enables <1 µs short-circuit protection and soft shutdown, preserving SiC FET reliability under dynamic load faults. |
| Traction Inverter Subsystems | Isolated SMPS Gate Control |
Use Scenario: Auxiliary power supply sections in EV traction inverters where compact, AEC-Q100-compatible isolation is required. IC Role / Device Role / Timing Role: Reinforced-isolation driver for IGBTs/SiC FETs in 400–800 V DC-link subsystems. Use Value: 3.75 kVrms rating and –40 to 125 °C operation meet ASIL-B functional safety requirements without derating. |
Use Scenario: Secondary-side synchronous rectifier control in isolated flyback or forward converters. IC Role / Device Role / Timing Role: Isolated gate driver with integrated bias supply for high-side SR MOSFETs in 65–100 kHz SMPS. Use Value: Integrated ESW pin simplifies transformer-driven gate drive, eliminating external bootstrap diodes and capacitors. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar isolated gate driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SI8282CC-IS | 12 V UVLO threshold instead of 9 V; identical pinout, isolation, and DC-DC architecture. | Better suited for 12 V gate drive rails in IGBT-based industrial drives; not optimal for 9 V–10 V SiC FET gate bias. | Select SI8282CC-IS when system uses 12 V driver-side supply and requires same external-switch DC-DC capability. |
| SI8284BC-IS | 24-pin WB SOIC package; adds shutdown, soft-start, and programmable frequency controls absent in SI8282BC-IS. | Required for EMI-sensitive applications needing dithered frequency tuning or controlled power sequencing. | Choose SI8284BC-IS only if shutdown/soft-start functionality is mandatory; otherwise SI8282BC-IS offers lower cost and smaller footprint. |
Compared with SI8282CC-IS, SI8282BC-IS provides tighter UVLO matching for 9 V SiC gate bias, while SI8284BC-IS trades pin count and complexity for enhanced EMI control - making SI8282BC-IS the optimal balance of simplicity, SiC-specific protection, and industrial thermal robustness.
Availability
SI8282BC-IS is available at Aetrix Electronics and suitable for industrial inverters, SiC motor drives, and traction subsystems requiring stable component supply, long-term lifecycle assurance, and traceable sourcing for production ramp.
Supply support for SI8282BC-IS includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Skyworks Solutions is a global semiconductor company specializing in analog and mixed-signal connectivity solutions, with leadership in RF, timing, and isolation technologies.
The SI828x product line was designed specifically for high-reliability SiC and IGBT gate driving in demanding power conversion systems - emphasizing integrated safety, reinforced isolation, and simplified isolated bias generation.
FAQ
What is the isolation voltage rating of the SI8282BC-IS and which safety standards does it meet?
The SI8282BC-IS has a 3.75 kVrms isolation rating per UL1577 for 1 minute, and is certified to CSA/IEC 62368-1, VDE EN 62368-1, and CQC GB4943.1-2011 for reinforced insulation. This rating applies directly to the SI8282BC-IS device as specified in Table 1.1 of the official Skyworks datasheet, and supports its use in 600–1200 V power stages without additional isolation barriers. SI8282BC-IS meets these standards out-of-the-box with no derating required at full temperature range.
Does the SI8282BC-IS support both SiC FETs and IGBTs, and how does its DESAT function differ between them?
Yes, the SI8282BC-IS is explicitly designed for both SiC FETs and IGBTs, with DESAT detection calibrated for VDS (SiC) and VCE (IGBT) monitoring. Its 7 V threshold and 220 mV hysteresis are fixed and validated for both device types; external RDSAT/DDSAT values and CBL capacitance (220–390 pF) are selected based on the switch's saturation voltage and switching speed. SI8282BC-IS delivers <1 µs fault response in either case, as confirmed in Section 3.1.4 of the datasheet.
What is the role of the ESW pin on the SI8282BC-IS, and why is it not present on Si8281 variants?
The ESW (External Switch) pin on the SI8282BC-IS drives an external MOSFET or BJT to implement the DC-DC converter's primary-side switch - enabling higher input voltage operation (up to 24 V) and greater power delivery than Si8281's internal-switch architecture. This distinction is documented in Table 1.1 and Section 3.2.10 of the datasheet: Si8281/Si8283 use internal switches and lack ESW, while Si8282/Si8284 require ESW for external-switch DC-DC control. SI8282BC-IS relies on ESW for flexible, efficient isolated bias generation.
Can the SI8282BC-IS be used in automotive applications, and what qualifications does it carry?
The SI8282BC-IS is an industrial-grade part (suffix "-I"), but its automotive-grade counterpart SI8282BC-AS is AEC-Q100 qualified and manufactured with full automotive process flows. While SI8282BC-IS itself is not AEC-Q100 certified, it shares identical electrical parameters, package, and marking with the -AS version per Note 5 in the Ordering Guide. For non-safety-critical auxiliary systems or prototyping, SI8282BC-IS may be evaluated - however, production automotive designs require SI8282BC-AS to meet PPAP and IMDS/CAMDS compliance.
How does the Miller clamp function in the SI8282BC-IS improve system reliability in half-bridge topologies?
The SI8282BC-IS Miller clamp actively pulls the gate to VMID when VL is inactive, preventing parasitic turn-on caused by dV/dt-induced current through the SiC FET's drain-to-gate (CDG) or IGBT's collector-to-gate (CCG) capacitance. This function is implemented via the CLMP pin and eliminates shoot-through risk during high-speed switching - a critical reliability feature confirmed in Section 2.3 and Figure 3.4 of the datasheet. SI8282BC-IS integrates this clamp natively, removing need for external transistor-level solutions.
SI8282BC-IS Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Skyworks Solutions Inc.
- Series:
- -
- Package/Case:
- 20-SOIC (0.295", 7.50mm Width)
- Packaging:
- Tube
- Product Status:
- Active
- Technology:
- Capacitive Coupling
- Number of Channels:
- 1
- Voltage - Isolation:
- 5000Vrms
- Common Mode Transient Immunity (Min):
- 35kV/µs
- Propagation Delay tpLH / tpHL (Max):
- 50ns, 50ns
- Pulse Width Distortion (Max):
- 5ns
- Rise / Fall Time (Typ):
- 5.5ns, 8.5ns
- Current - Output High, Low:
- 2.5A, 3A
- Current - Peak Output:
- 4A
- Voltage - Forward (Vf) (Typ):
- -
- Current - DC Forward (If) (Max):
- -
- Voltage - Output Supply:
- 2.8V ~ 5.5V
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Operating Temperature:
- -40°C ~ 125°C
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 20-SOIC
- Approval Agency:
- CQC, CSA, UL, VDE
SI8282BC-IS FAQ
1.How can I place an order for SI8282BC-IS through Aetrix?
Please submit a Request for Quotation (RFQ) for SI8282BC-IS on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for SI8282BC-IS reliable?
The price and inventory of SI8282BC-IS are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SI8282BC-IS is usually 5 days.
3.What payment methods are accepted for SI8282BC-IS?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SI8282BC-IS transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SI8282BC-IS?
SI8282BC-IS orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SI8282BC-IS order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for SI8282BC-IS?
For technical support, including SI8282BC-IS datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SI8282BC-IS requirements.
6.How does Aetrix verify that SI8282BC-IS is sourced from the original manufacturer or authorized distributors?
All SI8282BC-IS products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that SI8282BC-IS meets industry standards.
7.What is the process for return or replacement of SI8282BC-IS?
All SI8282BC-IS units undergo pre-shipment inspection (PSI). If there is an issue with SI8282BC-IS, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The SI8282BC-IS part is unused and in its original packaging.
Return procedure for SI8282BC-IS:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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